/Engine/Source/Editor/UnrealEd/Public/ImportUtils/SkelImport.h
FExistingMeshLodSectionData ( [FName](API\Runtime\Core\UObject\FName) InImportedMaterialSlotName, bool InbCastShadow, bool InbVisibleInRayTracing, bool InbRecomputeTangents, ESkinVertexColorChannel InRecomputeTangentsVertexMaskChannel, int32 InGenerateUpTo, bool InbDisabled )